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package main
import (	"fmt"	"io/fs"	"os"	"os/exec"	"path"	"runtime")
func handle(in chan string, out chan any, lim chan struct{}) {	lim <- struct{}{}	d := <-in	run(d, out)	<-lim}func main() {
	var matches, err = (fs.Glob(os.DirFS("./"), "./*/go.mod"))	if err != nil {		fmt.Println(err)		return	}	var MAXREQS = runtime.NumCPU()
	var lim = make(chan struct{}, MAXREQS)	out := make(chan any, len(matches))	in := make(chan string, len(matches))	for range matches {
		go handle(in, out, lim)
	}	for _, m := range matches {
		in <- m	}
	for range matches {		var b = <-out		if nil != b {			panic(b)		}	}
}func run(m string, out chan any) {	defer func() {		var e = recover()		if e != nil {
			out <- e			return		}		out <- nil	}()
	cmd := exec.Command("go", "test", "-v")
	cmd.Dir = "./" + path.Dir(m)	fmt.Println(cmd.Dir, cmd)	cmd.Stdout = os.Stdout	cmd.Stderr = os.Stderr	var err = cmd.Run()	if err != nil {		panic(err)	}}